- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 15/3228 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip formed by deforming a flat ring
Patent holdings for IPC class F16J 15/3228
Total number of patents in this class: 81
10-year publication summary
|
13
|
8
|
9
|
1
|
5
|
9
|
7
|
9
|
4
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Carl Freudenberg KG | 1497 |
8 |
| ElringKlinger AG | 581 |
6 |
| NOK Corporation | 2330 |
6 |
| ElringKlinger Kunststofftechnik GmbH | 32 |
5 |
| Saint-Gobain Performance Plastics Corporation | 1052 |
5 |
| Trelleborg Sealing Solutions Germany GmbH | 189 |
5 |
| KACO GmbH + Co. KG | 50 |
4 |
| Denso Corporation | 25746 |
3 |
| Caterpillar Inc. | 10316 |
3 |
| Aktiebolaget SKF | 3156 |
3 |
| Amsted Rail Company, Inc. | 412 |
3 |
| Schaeffler Technologies AG & Co. KG | 11182 |
2 |
| Garlock Sealing Technologies LLC | 146 |
2 |
| System Seals, Inc. | 5 |
2 |
| Volkswagen AG | 7494 |
2 |
| BAL Seal Engineering, LLC | 111 |
2 |
| Robert Bosch GmbH | 44327 |
1 |
| ZF Friedrichshafen AG | 7276 |
1 |
| NSK Ltd. | 2845 |
1 |
| Komatsu Ltd. | 4786 |
1 |
| Other owners | 16 |